Adding Three Numbers
How to add three numbers (for example 45 + 82 + 67).
- Place the numbers in a column so that the tens' place digits and ones' place digits
are lined up. Draw a line under the bottom number.
45
82
67
- Add the three ones' place digits. (5 + 2 + 7 = 14). This sum is a two-digit
number, so place a one above the tens' place column and place the four below the
line in the ones' place column.
1
45
82
67
4
- Add the numbers in the tens' place column (1 + 4 + 8 + 6 = 19) and place the answer below
the line and to the left of the ones' place sum
1
45
82
67
194
- If the sum of the ones' place digits is less than ten no number is placed above the
tens' place column
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